:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --accent: #f59e0b;
  --accent2: #ea580c;
  --ok: #16a34a;
  --warn: #d97706;
  --bad: #dc2626;
  --shadow: 0 10px 30px rgba(15, 23, 42, .08);
  --radius: 18px;
  --max: 980px;
}
[data-theme="dark"] {
  --bg: #0b1220;
  --card: #141c2b;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --line: #243044;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px 48px; }

/* Header */
.top {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 55%, #334155 100%);
  color: #fff;
  padding: 18px 0 28px;
}
.top-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff !important;
  text-decoration: none !important;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -.02em;
}
.brand .bolt {
  width: 36px; height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  display: grid; place-items: center;
  font-size: 1.1rem;
  box-shadow: 0 6px 16px rgba(245,158,11,.35);
}
.brand span.dim { color: #fbbf24; }
.nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.nav a, .theme-btn {
  color: #e2e8f0;
  font-weight: 600;
  font-size: .9rem;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  text-decoration: none;
  cursor: pointer;
}
.nav a:hover, .theme-btn:hover { background: rgba(255,255,255,.16); text-decoration: none; color: #fff; }
.theme-btn { font-family: inherit; }

.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 8px 16px 0;
}
.hero h1 {
  margin: 12px 0 6px;
  font-size: clamp(1.6rem, 4vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.15;
}
.hero .lead {
  margin: 0;
  color: #cbd5e1;
  max-width: 52ch;
  font-size: 1.02rem;
}
.badge-src {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .8rem;
  color: #94a3b8;
  margin-top: 10px;
}

/* KPI */
.grid-kpi {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: -18px 0 18px;
}
@media (max-width: 800px) {
  .grid-kpi { grid-template-columns: 1fr 1fr; }
}
.kpi {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: var(--shadow);
}
.kpi .label {
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--muted);
}
.kpi .value {
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: -.03em;
  margin: 4px 0 2px;
  line-height: 1.1;
}
.kpi .value small {
  font-size: .55em;
  font-weight: 700;
  color: var(--muted);
}
.kpi .sub { font-size: .85rem; color: var(--muted); }
.kpi.now {
  border-color: rgba(245,158,11,.45);
  background: linear-gradient(160deg, var(--card), rgba(245,158,11,.08));
}
.kpi.cheap .value { color: var(--ok); }
.kpi.exp .value { color: var(--bad); }

/* Tips / recomendaciones */
.tips {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}
.tip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: baseline;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
  font-size: .95rem;
  box-shadow: var(--shadow);
}
.tip strong { font-weight: 800; white-space: nowrap; }
.tip-ok { border-color: rgba(22,163,74,.35); }
.tip-ok strong { color: var(--ok); }
.tip-warn { border-color: rgba(217,119,6,.35); }
.tip-warn strong { color: var(--warn); }
.tip-bad { border-color: rgba(220,38,38,.35); }
.tip-bad strong { color: var(--bad); }

/* Panels */
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
  box-shadow: var(--shadow);
  margin-bottom: 18px;
}
.panel h2 {
  margin: 0 0 6px;
  font-size: 1.15rem;
  font-weight: 800;
}
.hint {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: .92rem;
}
.sec-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin: 8px 0 12px;
}

/* Hours */
.hours { display: flex; flex-direction: column; gap: 6px; }
.hour-row {
  display: grid;
  grid-template-columns: 110px 1fr 72px 64px;
  gap: 10px;
  align-items: center;
  padding: 6px 8px;
  border-radius: 12px;
}
.hour-row.is-now {
  background: rgba(245,158,11,.12);
  outline: 1px solid rgba(245,158,11,.35);
}
.hour-row .time {
  font-weight: 700;
  font-size: .9rem;
  white-space: nowrap;
}
.bar-track {
  height: 10px;
  background: var(--line);
  border-radius: 999px;
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  border-radius: 999px;
  min-width: 8px;
}
.bar-fill.barato { background: linear-gradient(90deg, #22c55e, #16a34a); }
.bar-fill.medio { background: linear-gradient(90deg, #fbbf24, #d97706); }
.bar-fill.caro { background: linear-gradient(90deg, #f87171, #dc2626); }
.hour-row .price {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  text-align: right;
  font-size: .92rem;
}
.tag {
  font-size: .72rem;
  font-weight: 800;
  text-align: center;
  padding: 4px 0;
  border-radius: 999px;
  text-transform: uppercase;
}
.tag.barato { background: rgba(22,163,74,.15); color: var(--ok); }
.tag.medio { background: rgba(217,119,6,.15); color: var(--warn); }
.tag.caro { background: rgba(220,38,38,.15); color: var(--bad); }

@media (max-width: 560px) {
  .hour-row { grid-template-columns: 78px 1fr 70px; }
  .hour-row .tag { display: none; }
}

/* Tools */
.tools {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 18px;
}
@media (max-width: 640px) { .tools { grid-template-columns: 1fr; } }
.tool {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  color: inherit;
  text-decoration: none !important;
  transition: border-color .15s, transform .15s;
}
.tool:hover { border-color: var(--accent); transform: translateY(-1px); }
.tool .ico { font-size: 1.4rem; }
.tool h3 { margin: 8px 0 4px; font-size: 1.05rem; }
.tool p { margin: 0; color: var(--muted); font-size: .92rem; }

/* Blog cards */
.blog-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 640px) { .blog-grid { grid-template-columns: 1fr; } }
.blog-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  color: inherit;
  text-decoration: none !important;
  display: flex;
  flex-direction: column;
}
.blog-card .body { padding: 14px 16px 16px; }
.blog-card h3 { margin: 0 0 6px; font-size: 1.02rem; }
.blog-card p { margin: 0; color: var(--muted); font-size: .9rem; }

.note {
  font-size: .85rem;
  color: var(--muted);
  margin-top: 10px;
}
.footer {
  max-width: var(--max);
  margin: 24px auto 0;
  padding: 20px 16px 40px;
  color: var(--muted);
  font-size: .88rem;
  border-top: 1px solid var(--line);
}
.footer strong { color: var(--text); }

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
.tabs a {
  padding: 8px 14px;
  border-radius: 999px;
  font-weight: 700;
  font-size: .9rem;
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
}
.tabs a.active {
  background: linear-gradient(135deg, #f59e0b, #ea580c);
  color: #fff;
  border-color: transparent;
}

/* Article pages */
.article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px 28px;
  box-shadow: var(--shadow);
  margin-top: 18px;
  max-width: 720px;
}
.article h1 {
  margin: 0 0 12px;
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.2;
}
.article h2 {
  margin: 24px 0 8px;
  font-size: 1.15rem;
  font-weight: 800;
}
.article p { margin: 0 0 12px; color: var(--text); }
.article ul { margin: 0 0 14px; padding-left: 1.2em; }
.article li { margin-bottom: 6px; }
.article .meta {
  color: var(--muted);
  font-size: .88rem;
  margin-bottom: 16px;
}